Mobile eyebrows allowed humans to communicate non-verbally, which helped to form large, social networks.
Sediment samples reveal swimmers and tourists are polluting the lake where Henry David Thoreau sought solace in the mid-19th century. And climate change is expected to exacerbate the damage.
A mass migration of 50 million people is projected by 2050 due to land degradation from farming, mining, pollution, and urban development, according to a new intergovernmental report.
A series of reports compiled by nearly 600 scientists meeting in Medellin, Columbia paint a grim picture of the world at the end of the century, with human activities driving the sixth mass extinction in Earth’s history.
Only two females remain alive, and scientists hope in-vitro fertilization might be used to preserve the subspecies.
The accident is the first fatal self-driving car incident involving a pedestrian.
Hawking's wit and genius earned him accolades in academia and in popular culture.
A CDC study found an acceleration in the number of hospital visits due to overdoses from drugs like heroin, fentanyl, and prescription painkillers.
The planet will face a 40 percent water deficit if global warming continues at its current pace, according to the United Nations, highlighting the importance of efficient agricultural practices.
The number of the Adelie penguins has declined by about 70 percent in recent decades due to sea ice melt.